G'day all, just picked up a couple of remote A banders that have had the 12.5 mod done to them. Tried putting a 25kc chip in but the thing would not lock up ....
... If you're using a ROM programmed for 25Khz channel spacing it will not work, as the synthesiser is programmed differently for 12.5Khz. There are two...
Trying to reprogram an FM92 for uk 2m band. Have FPP running in dos ok but have no Eprom burner. Borrowed a Stag M101A programmer but this only interfaces to...
Hi Group Is it OK to swap the synth board from one radio to another? I have 2 FM92's one is E band local head ex commercial (no mods yet) the other is A band...
Hi Rob, You only need to make a bin file with fpp and then take that bin file from fpp and run it with your burner software to write to the eprom. You use...
Rob, Just to elaborate, FPP will create a binary file in a subdirectory of the C:/FPP/FM900/JOBS with the name of your project (like MY2MROM.BIN). It does...
Hi Steve, You can swap FM92 control/synth boards but there are some subtle differences in a few components in the synthesiser prescaler and VCO control...
Thanks Mark Ok then, if I just move the CTCSS module and the NSC810 chip is that enough? The small chip & components next to the NSC810 are already there ...
Thanks Mark and Mat for the info, I'll bash on along those lines but will probably be back with more questions :) Have no h/book for the programmer and I am...
Hi Rob, Having a compatible parallel port programmer would certainly be nice, but I don't know if the schematic has ever been published. I'm fairly sure the...
Hi Steve, There is a link or two on the PCB that needs to be changed when fitting the NSC810 "I/O Expander Kit", and another that may need changing for the...
Hi Mark, I have used a number of programmers over the years , none of which was compatible with the FPP software but all had no problems with programming the...
... due to one or more or most likely all of the following reasons old age poor sight not looking close enough, poor light and a massive infection getting me...
Hi Alan, Looking at the circuit, it would appear that offsetting the connector would have applied 13.8 Volts to the internal +10V Tx supply, which powers the...
HI ALL JUST WONDERING WITH THE PHILLIPS FM900 I JUST BROUGHT I THOUGHT IT WOULD BE A NORMAL 40 CH CB BUT I WAS WRONG CH ARE ALL OVER THE PLACE AND THEY ARE...
Hi Graham first you have to get the fpp program and write a bin file for what you want in the radio the you have to have a eprom burner and put the bin file...
Also with the programming you need to know if the radio is fitted with options EG: sellcall board Type 1 or 2 , ctcss encode or endode decode board and the...
Daniel, I think Graham is looking for someone else to reprogram it. I'm sure there are standard EPROM binaries around on the WEB - all he needs is someone...
G'day all, got a remote A band FM900. Tried burning a 12.5 khz rom with fpp, but when inserted into the radio,it refuses to lock up on receive, have not tried...
Hi Simon, Usually there isn't much call for 12.5kHz channels on 2 meters. Those that do insist on using odd multiples of 12.5kHz usually end up causing grief...
I am after the pin connections for a "CES" brand DTMF microphone made by Winter Park Florida USA. It uses the standard DIN plug but does not work on my early...
Hello Les You will find that the mike needs +12 Volts to pin 8 from the control head. Telstra mods. Run a wire from pin 8 to switched 12 v in the control head...
On some of the fm900 heads the wiring was not always in place u may have to look at the wiring inside the head Alan _____ From: FM900@yahoogroups.com...
Thanks for the tip Alan, looks like I will have to trace the wiring as my old standard mic works on the same pinouts as the DTMF mic. Cheers, Les [Non-text...
I have heard that the standard dynamic mic insert can be replaced with a condenser mic, if so, what type is used and how is it wired in? Thanks in advance, Les...
Hi Alan, thanks for the info but does not apply to my problem as I'm not using a remote head type unit. The problem is solved now after making a small mod...
Hi Don, thanks for the info. It didn't apply to my problem as the mic has no connection on pin 8. A small mod was required in the radio itself to apply 12v to...
Hi Guys My Problem is that I have a fully working FM91 Repeater I would like to put some different Freq's in it. Is there something special or non standard in...
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